Chapter 6 - System Operation and Control
42
IN CASE OF DIFFICULTY
The Kantronics ALL MODE COMMUNICATOR is manufactured to very stringent quality stand-
ards. If you have followed the installation procedures outlined in this manual, it is highly unlikely
that you will encounter a failure. If you do have difficulty, use the procedures described in this sec-
tion to assist in isolating and correcting the problem.
I.
KAM does not "sign-on" to computer.
1. Carefully recheck cabling between your computer RS-232 port and the KAM.
2. Check carefully to insure that the transmit data, receive data, and ground leads are
connected to the proper pins.
3. If you have made a 5 wire connection to the computer RS-232 port, change to a 3 wire
connection.
4. Check your terminal program to be certain it is booted with the correct communications
parameters.
5. Check to insure that the RS-232/TTL jumper (K-7) is properly positioned for your com-
puter.
6. Try a "Hard Reset" using the Test/Normal jumper (K-6).
II.
You Are Unable to Make a "Connect".
1. Issue a connect request and observe the XMIT LEDs. If an XMIT LED illuminates, check
to insure that the radio is connected to the corresponding radio port.
2. Observe the radio to determine if it is being switched to the "Transmit" condition. If
not, recheck wiring between the radio port and PTT pin on the microphone jack.
3. Turn the VHF radio squelch control to "OFF" and see if the RCV LED illuminates on the
packet controller. If it does not light, recheck the audio connection between your trans-
ceiver and the packet controller.
4. If possible, monitor your transmitted signal with another radio. If the transmitter is key-
ing to "Transmit" but weak or no audio is monitored, increase AFSK output as necessary
using jumpers K-2 and K-5 or a resistor change.
